One reason for constant lighting

I wanted to take a picture of the bas-relief Ziploc logo. Since I am used to taking pictures of food with a flash, I whipped them out. However, capturing the minute detail is hard. Especially when you cannot see the results immediately. How does changing the angle of the light affect the image, or the camera positioning, or the light levels? This process takes time. Which was enough to allow for condensation to mar the smooth surface of the caramel. So I put the caramel back in the refrigerator and took a time out.

When I went back to it, I used my large, diffused led bank. Now I had real-time feedback as I moved the subject around the camera. So, for a time-constrained image use some bright, and constant, lighting.